Battery- and hydrogen-powered electric truck maker Nikola (NASDAQ: NKLA) released a slew of new developments this week, including an important partnership today. In just the past three days, Nikola has announced a partnership to expand the use of electric Class 8 heavy truck fleets, the 100th sales order for its Tre hydrogen fuel trucks, and today the intent to purchase hydrogen production equipment for those fleets from Chart Industries. Further uncertainty was added to start the week when Nikola said its CFO was retiring effective next week.